This multimedia bird reference book on CD Rom includes detailed species accounts for over 900 North American birds, including 851 high-resolution photographs, over 625 detailed range maps, and 415 songs or call notes. Special Features: Compare Photographs of two species, The Identification Matrix - identify a bird by specifying the field marks, 700 LANIUS Secrets - identification hints and trivia. Summaries of habitat needs and field marks for each species, tutorials and essays, fun quizzes- learn to ID by sight and sound. The management status and the Breeding Bird Survey population trend index is also listed for each species. CD Rom. System requirements: Windows 95, 98, ME, NT, 2000, or XP.